我有个密码。我正在从restapi读取json数据，并尝试使用pyspark进行加载。但是我无法读取spark中Dataframe中的数据。有人能帮我吗。

import urllib
from pyspark.sql.types import StructType,StructField,StringType

schema = StructType([StructField('dropoff_latitude',StringType(),True),\
                     StructField('dropoff_longitude',StringType(),True),
                     StructField('extra',StringType(),True),\
                     StructField('fare_amount',StringType(),True),\
                     StructField('improvement_surcharge',StringType(),True),\
                     StructField('lpep_dropoff_datetime',StringType(),True),\
                     StructField('mta_tax',StringType(),True),\
                     StructField('passenger_count',StringType(),True),\
                     StructField('payment_type',StringType(),True),\
                     StructField('pickup_latitude',StringType(),True),\
                     StructField('ratecodeid',StringType(),True),\
                     StructField('tip_amount',StringType(),True),\
                     StructField('tolls_amount',StringType(),True),\
                     StructField('total_amount',StringType(),True),\
                     StructField('trip_distance',StringType(),True),\
                     StructField('trip_type',StringType(),True),\
                     StructField('vendorid',StringType(),True)
                    ])
url = 'https://data.cityofnewyork.us/resource/pqfs-mqru.json'
data =  urllib.request.urlopen(url).read().decode('utf-8')

rdd = sc.parallelize(data)
df = spark.createDataFrame(rdd,schema)
df.show()```

**The Error message is TypeError: StructType can not accept object '[' in type <class 'str'>**
**I have been able to do using dataset in scala but i am not able to understand why its not possible using python**

导入spark.implicits_
//从纽约市出租车数据rest api加载2016绿色出租车出行数据val url=“https://data.cityofnewyork.us/resource/pqfs-mqru.json“val result=scala.io.source.fromurl（url）.mkstring
//从json数据val taxidf=spark.read.json（seq（result）.tods）创建一个Dataframe
//显示包含行程数据taxidf.show（）的Dataframe